Wall furring-strip for steel ceilings



L. J. GRAFF.

WALL FURRING STRIP FOR STEEL CEILINGS. APPLICATION FILED FEB. 25, 1920.

1 345,002, Patnted June 29, 1920.

VENT R.

UNITED. STATES.

LOUIS J. GfaArir, or PITTSBURGH, PnmisYLvANI WALL EURRING-STRIP roas'rEEL oEILInGs.

Specification of Letters Patent Patentfl J n 29, 192() .Original application filed June 30; 1919, Serial No. 307,514. Dtvided'and this application filed February 25, 1920. Serial No. 361,084. I l

a To all whom it may concern:

it known that I, Louis J. GRAFF, a citizen of the United States, and residing in the city of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented or discovered new, useful, and Improved all Furring-Strips for Steel Ceilings, of which the following is a specification.

This patent application is a division of my patent application, Serial Number 307,514, filed in the United States Patent .Oflice on June 30th, 1919, andmy present invention comprises a newand improved side or wall furring strip for steel ceilings.

More particularly my invention consists of afurring strip to be attached to the wall of a building, room or apartment near the ceiling for the support ofthe ceiling plates which fill the angle between the ceiling and theiside walls.

The object which I have in' view is a provision of a metal furring strip for this purpose which may be quickly and conveniently installed; which will properly support the ceiling plates, and which will insulate and protect from fire the inflammable portions of the building. V

With these ends in. View, I have produced a wall furring strip by bending up a strip or length of metal into box form, having a vertical flange by means of which it may be nailed or otherwise attached to the wall, and an outwardly extendin preferably L shaped flange, upon whic the edges of the ceiling plates bear and which is preferably clenched up against the flanged edges of said ceiling plates. I

Other novel features of construction and arrangement of parts will appear from the following description.

In the accompanying drawings, which are, however, merely intended to illustrate the practical embodiment of my invention without limiting the scope of the same to the'exact construction shown, Figure 1 is a broken perspective showingmy improved wall furring strip supporting a ceiling plate. Fig. 2 is a similar view showing the wall furring strip attached to the wall, and Fig. 3 is an inverted plan of a corner of a steel ceiling showing the use 'ofmy improved wall furring strips.

The following is a detailed description of the drawings. v

A is my improved furring stripwhich is more fully described and "claimed in my above mentionedpending patent application, and briefly consisting of a box body 1, top flanges 2 by means of which the strip A is nailed to the building joist not shown, and bottom flanges 3 upon which' the flanged edges tof the ceiling plates rest, saidfurring strip flanges 3 being clenched, as shown, up against the flanges 4 of the ceiling plates. B represents the flat ceiling plates which compose the steel'ceiling except along the edges where bent or curved ceiling plates B are used to cover. the angles between the ceiling and walls of the room.

Thus the upper'flanged edge ofthe ceiling plate B rests upon and is secured within the clenched flange 3' of the furring strip A.

. C is the wall or sidefurringstrip, preferably made by bending up a strip of metal to form a box body5 which fits against the wall D, a vertical flange 6 which also fits against saidwalland is nailed or otherwise secured thereto, and an outwardly extending L-shaped flange 7 upon which the lower flanged edge 4 of the plates B rest. The

flange 7 is clenched up against the flanged edge 4 of the plates B, thus holding them firmly in place.

As shown in the inverted plan view comprising Fig. 3. of the drawings, at the cor ners of the room the ends of the plates B and the wall furring strips C are mitered together. a V g There is suflicient flexibility in the metal furring strips to permit theceiling plates to be sprung into engagement, and to be slid into position at the corners.

It is apparent that by the use of my improved ceiling and wall furring strips, a steel ceiling may be quickly put-in place and that the completed ceiling is secured in such amanner that an ample air-space is pro vided between the ceiling plates and the joist and walls of the building, the wall furring strips increasing the heat insulation by their box form.

Therefore, the steel ceiling must attain a very high temperature, in case of fire before damage will result to. the building proper, and but little damage, except to the paint,

' will result to the steel ceiling, as the plates cannot buckle or loosen and can only be destroyed b a melting heat.

What desire to claim is 1. A wall furring strip for steel ceilings comprising a hollow box body adapted to rest against the wall, a vertical flange adapt-' ed to rest againstthe wall and to be secured thereto, and a flange extending outwardly from said box only and. upon which the a lower edge of the ceiling plates rest.

2. A wall'furring strip for steel ceilings, comprising a hollow box body adapted to rest against the wall,. a vertical topflange adapted torest against the wall and to be secured thereto,and a bottom flange extend- 1 rest.

ingoutwardly from said box only and upon which the lower edge of the ceiling plates 3. A wall furringstrip for steel ceilings, comprising a hollow box body adapted to rest against the wall, a vertical flange adapted to rest against the wall and to be secured thereto, and a flange extending outwardly from said box ,only and upon which the lower edge ofthe ceiling plates rest, said last named flange being clenched up against the flanged edges of the ceiling plates.

4. A wall furring strip for steel ceilings comprising ahollow box body adapted to rest against the wall, a vertical top flange 1 ceilin strip of metal and comprising a body adapt ed to fit against the wall, a vertical top flange adapted to fit againstthe wall and to be attached thereto, and an L-shaped bottom flange extending outwardly from said' box only and upon which the edges of the plates rest. V r r 6. K wall furringstrip, for the support of iceiling plates, provided I with flanged edges, formed by bending up a strip of metal and comprising a boxbody adapted to fit against the wall, a vertical top flange adapted to fit against the wall, and to be attached thereto, and an L'--shaped 'bottom flange extendingoutwardly from said box only and upon which. the'edges of the ceiling plates rest, said last mentionedflange being .adapted tobe clenched-up against the V flanged edges of said ceiling plates.

Signed at Pittsburgh Pa. this 24th day of F eby. 1920.

LOUIS J.

Correction in Letters Patent No. 1,345,002. 2 2' It is hereby certified that in-Letters Patent N 0. 1,345,002, granted June 29, 1920,-

upon the application of Louis J. Grail, of Pittsburgh, Pennsylvania, for an improvement in Wall Furring-Strips for Steel Ceilings, an error appears in the printed specification requiring correction as follows: Page 2, lines 10, 17, 25,34, 16,

and 56, claims 1-6, for the Word only read body; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 3d day of August, A. D., 1920. v

[SEAL] R. F. WHITEHEAD,

Acting Commissioner of Patents. Cl. 189- 88. 

